Added a tiny script to be run from within docker, to install the extra packages needed to run the dependency-graph and htpasswd tests.

 - Legacy-Id: 12564

Author: levkowetz

docker/install-extras

@@ -0,0 +1,7 @@
+#!/bin/bash
+
+export DEBIAN_FRONTEND=noninteractive
+su - -c "apt-get update \
+	&& apt-get install -qy graphviz ghostscript apache2-utils \
+	&& apt-get clean \
+	&& rm -rf /var/lib/apt/lists/*"